This is the 2705th most frequent Japanese word.
痛み
Pain.
The word '痛み' here refers to physical pain experienced in the head.
頭に痛みを感じます。
I feel pain in my head.
In this sentence, '痛み' refers to emotional pain or distress.
その失敗には心に深い痛みを感じました。
That failure caused deep emotional pain in my heart.
Here, '痛み' represents minor physical discomfort or ache caused by physical activity.